Clock



Dec. 21 1926. 1,611,568

M. A. STANDOW CLOCK Filed June 30 1925 2 Sheets-Sheet 1 IN V EN TOR.

Maw

flfl/ ATTZZNEY Dec. 21 1926.

M. A. STANDOW CLOCK Fil d u 3 1925 .2 Sheets-Sheet 2 IN VEN TOR.

A ORNEY means and the Patented Dec. 21, 1926.

UNITED STATES 'MARK A. STANDOW OF NEVL ARK NEW JERSEY.

CLOCK.

Application filed June 30, 1925.

111 the electrical winding means and the strain on any of the parts 18 at no time Another object of the invention is the provision of an improved means for fasted ing the clock casing in position within a circular or other opening in a wall such as the dashboard or one of the dashboard fixtures of an automobile.

The inve ion is directed to a clock winding n'iechan m, and its connection with the clock movement proper which utilizes a spring connection between the winding clock movement so that too much pressure is not suddenly directed against the movement and also is directed to an adjusting means so that the main spring, which is very small and relatively weak, can be regulated so that the speed of the movement can be controlled.

The invention is illustrated in the accompanying drawings in which Figure l is a tront view of the clock shown installed on a supportsuch as a dashboard. Figure 2 is a hack view of; the clock. Figure 3 is a section take" on line 33 in lligure 2 but with a i 01'? the casing and with the mechanism within shown in ehgvation. Figure 4; is a section on line i t in Figure 2 wi 1 the winding mechanism again shown in clcva higure 5 is a SBCLlOll taken on line 5'- f in Figure Figure (5 is a section taken on line 6 in Fl; Figure 7 is ire o. a section taken on line 77 in Figure 2-3. Figure 8 is a section on line 55 in Figure 2i hutlcolting in the opposite direction from the ,view in l igure 5 and Figure 9 is a diagrammatic view showing how the device is arranged in a circuit.

The clock may be mounted on a suitable stand or standard but it is preferably made so that it can be inserted in. an opening such as a dashboard, part 01" a dashboard l'leing shown at 10 and the clock casing being Serial No. 40.475.

shown at 11 with the usual dial 12 on the rear of the face plate on which is mounted a casing 13 in which is the usual clock movcment proper which consists of the train of gears that extend from the main shaft 1st to the hour and minute hands and also contains the balance n'iovement, and as these form no part of my invention, 1 do not illustrate them in detail.

The winding mechanism is placed within the casing in rear of the housing 13 and is preferably mounted on two plates 15 and 16, studs extending through them to the front piate to support the device and also having studs to separate the plates at the proper interval.

On the front of the plates are arranged the coils 17 of an electromagnet, the cords of these magnets when energized attracting an armature 18 which is pivoted as at 19 and has an extension arm 20 thereon, which extension arm is connected as by means of the rod 21 to the main spring 22 which is a small light spring which is mounted for adjustment on the ratchet wheel -3 which is held by the retaining pawl The end of the spring 22 bears against an adjustable means such as the pawl :25 screwed onto the end of the rod 21, the rod 21 passing through a hole in the spring and having its other end bent and passed through a hole in the extension arm 20. It will thus be seen that the main spring opposes the action of the electromagnet whenever the current is shut off.

Attached to the arm of the armature is an actuating pawl 26 which engages the teeth of the actuating ratchet The ratchet 27 is mounted so that it is loose on a small jacl -sl1aft 28 in line with the main shaft 14: of the clock proper and a resilient connection is arranged between the ratchet 27 and the shaft 28 consisting of the studs 29 on the ratchet and the flat spring 30 passing through the jack-shaft and extending so that its ends engage the studs 29. A retaining pawl 31 prevents the ratchet- 27 from retreating and a spring holds the actuating pawl 26 in Contact with the ratchet 27.

The armature 18 has depending there iron finger which is in engagement with the contact arm 34; by the slotted connection 35, the contact arm being pivoted as at 36 and being the secondary armature lit] and having a terminal 37 which is opposite a terminal 38 in the electrical circuit, as will be plainly evident from Figure 9.

The end of the jack-shaft 28 which is opposite the end of the main shaft 1 of the clock movement proper, is connected thereto by a fiat spring 39 which, when put under a strain, which is at no time very great, actuates the clock movement from the jack-shaft and the jack-shaft is under a tension. The upward movement of the armature 18 is limited usually by a suitable stop such as the sto pin 40 which engages the top edge of the opening 41 in the plate 15. I I

The operation of the device is as follows:

The main spring 22 is put under proper tension and presses on the pawl 25 which is on the screw-threadedend of the rod 21 and this slowly pulls on the extension arm 20, raises the armature 18 and pulls the ratchet 27 around by means of the pawl 26. This puts the spring 30 under a tension and this positive tension, although slightly cushioned, is transmitted to the fiat spring connection 39 which actuates the clock movement and the clock is running.

As the springs 30 and 39 actuate the clock movement the armature 18 slowly rises under the influence oi": the spring 22 and the finger 33 pulls up on the contact arm 34E, the contacts 37 and 38 are brought together, the coils of the electromagnet are energized and the armature is pulled down thus causing the pawl 26 to ride down a few of the teeth on the ratchet 27, the teeth of which are exaggerated in size in the drawings to make a clear showing, and also pulling back on the end of the spring 22 to put itunder a tension sufiicient to again raise the armature.

The armature can be raised because when it drops or is attracted by the coils of the magnet, the slotted connection 35 kicks the contact arm 3d so that the contact arm 34 is released from the magnet and the contacts 37 and 38 are forced apart,

It will be understood that but slight currentis used in this apparatus and while the current is used at relatively frequent intervals, it is only used momentarily.

lVhile I show in the drawings the two wires 42 and 43 as entering the mechanism for its operation, it will be understood to anyone skilled in the art, that one of the wires can be grounded as is very often done in such installations. V

In order to securely hold the clock in position, I arrange on the side or" the casing in slits therein, a toothed arm and while one arm might be suilicient, I prefer to place several around the periphery of the casing, these arms having their outer edges provided with teeth a d the wed e or slide 45 is actuated by a screwti which is fastened to the bad: 4'? of the casing so that the wedge 45 forces the toothed arms al outwardly and the clock casing is securely gripped in the opening in which it is located.

I claim:

A clock comprising a magnet, an armature for the magnet, a pawl on the armature, a ratchet to be operated step-by-step by the pawl as the armature oscillates, an arm on the armature, arod extending from the arm, a nut adjustable on the rod, a coiled main spring of relatively small size with its free end engaging the nut, an arm depending from the armature, apivoted contact arm having its free end in slotted engagement with the end of the arm depending from the armature and a fixed contact against which the contact arm is adapted to be moved whereby the circuit to the magnet can be made or broken, the contact arm being disposed underneath the magnet and forming a supplemental armature.

In testimony whereof I atfiX my signature.

MARK A. STANDOVV.

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